1) You don't care, or you don't know what to do.

2) When you really do care about something but you don't want to hurt anyone's feelings, or make them mad or something.

n. The birth name of somebody who has changed their name. Most commonly attributed to trans people, but can be attributed to any person who has changed their name. (sometimes written as two words: dead name)

v. 1. To call somebody by their deadname.
v. 2. To out somebody's deadname to the public.

Polite thing to say when you've accidentally revealed something that's bothering you.

Used so the other person forgets about it and doesn't worry.

Nothing matters

Used by professional wrestler The Rock as a catchphase during his WWF-WWE career.